Working on alittle addon to send off an email when a render is finished. The core of the script is complete, working on the preference now to store email info (smtp, port, username, pass, send to) and also to enable and dis-able email notifactions. Thought it would be convenient if there was a toggle right in the render window to atleast turn script off incase someone didnt want it to run and forgot or didnt want to hit the preference page.

Thanks.
That was a thought. Im thinking in the main preference, email info (smtp, port, username, pass, send to) since it only gets set once and no need to take up room else where, then some where with easy access have the enable. While piecing this together i came across some tuts about placing buttons an panels and like you said, it was straightforward… Guess i just like the idea of having the option right in front after hitting F12 to make any last min change.

Guess i just like the idea of having the option right in front after hitting F12 to make any last min change.

I hear ya. There are lots of places in Blender where that would be an advantage. Digging through several property panels and windows and menus to set up all the bits and bobs having to do with a single thing gets old really fast.

Just a follow up in case this comes up in someones search results:
I got the following to work, it will place a Panel in the Tools of the Image Editor which is the same “window” that appears during a f12 render. Its a small panel, but works for what i want. As said, this is in the Image Editor so it will also be shown in “UV/Image Editor, View and edit images and UV Maps”.